On thermal radiation from fusion related metals

In this paper, we use Mie theory to investigate the temperature-dependent emissivity of small particles composed of a fusion device relevant metal, lithium. We also use classical electromagnetic theory to estimate the high temperature emissivity of flat surfaces of liquid lithium and several metals, such as beryllium, being considered as plasma facing components in fusion devices. We use a Drude theory model for the temperature dependence of the optical constants of the metals. The results may have application to modeling or diagnosing the temperature of various metallic components in fusion environments.